Concept explainers
How much
Interpretation:
The amount of CaCl2have to be calculated.
Concept introduction:
Molarity: Molarity is defined as the number of moles of solute present in one litre of the solution In expression,
Answer to Problem 74A
770.7 gm of CaCl2 is needed to make 2.0 L of a 3.5 M solution.
Explanation of Solution
Given information:
Molarity of CaCl2 solution = 3.5 M
Volume of CaCl2 solution = 2 L
Write the expression for Molality.
Calculate the number of moles of
Calculate the mass of
(Note: Molecular weight of CaCl2 = 110.1 gm/mol)
Thus, the mass of CaCl2 = 770.7 gm
Chapter 14 Solutions
Chemistry: Matter and Change
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